Historical and projected climate indicators for Alaska at 12km

This dataset contains climate \"indicators\" (also referred to as climate indices or metrics) computed over one historical period (1980-2009) using the NCAR Daymet dataset, and two future periods (2040-2069, 2070-2099) using two statistically downscaled global climate model projections, each run under two plausible greenhouse gas futures (RCP 4.5 and 8.5). The indicators within this dataset include:

hd: “Hot day” threshold -- the highest observed daily maximum 2 m air temperature such that there are 5 other observations equal to or greater than this value.

cd: “Cold day” threshold -- the lowest observed daily minimum 2 m air temperature such that there are 5 other observations equal to or less than this value.

rx1day: Maximum 1-day precipitation

su: \"Summer Days\" –- Annual number of days with maximum 2 m air temperature above 25 C

dw: \"Deep Winter days\" –- Annual number of days with minimum 2 m air temperature below -30 C

wsdi: Warm Spell Duration Index -- Annual count of occurrences of at least 5 consecutive days with daily mean 2 m air temperature above 90th percentile of historical values for the date

cdsi: Cold Spell Duration Index -- Same as WDSI, but for daily mean 2 m air temperature below 10th percentile

rx5day: Maximum 5-day precipitation

r10mm: Number of days with precipitation > 10 mm

cwd: Consecutive wet days –- number of the most consecutive days with precipitation > 1 mm

cdd: Consecutive dry days –- number of the most consecutive days with precipitation < 1 mm